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CVE-2021-3499

MEDIUMCVSS 5.6/10EPSS 0.80%

Last modified

CVE-2021-3499 is a medium-severity vulnerability rated 5.6/10 on the CVSS scale. A vulnerability was found in OVN Kubernetes in versions up to and including 0.3.0 where the Egress Firewall does not reliably apply firewall rules when there is multiple DNS rules. It could lead to potentially lose of confidentiality, integrity or availability of a service.. EPSS estimates a 0.80% chance of exploitation in the next 30 days.

Description

A vulnerability was found in OVN Kubernetes in versions up to and including 0.3.0 where the Egress Firewall does not reliably apply firewall rules when there is multiple DNS rules. It could lead to potentially lose of confidentiality, integrity or availability of a service.

Metrics

CVSS 3.1
5.6/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS Probability
0.80%

51.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
OvnOvn-Kubernetes<= 0.3.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-3499?
A vulnerability was found in OVN Kubernetes in versions up to and including 0.3.0 where the Egress Firewall does not reliably apply firewall rules when there is multiple DNS rules. It could lead to potentially lose of confidentiality, integrity or availability of a service.
How severe is CVE-2021-3499?
CVE-2021-3499 has a CVSS score of 5.6/10 (MEDIUM severity). The EPSS model estimates a 0.80% probability of exploitation in the next 30 days.
How do I fix CVE-2021-3499?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3499?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST